Abstract: A receiving guide is attached to an upper portion of a discharge mechanism section via a bracket. When a photopolymer plate is discharged from a photopolymer plate conveying section, a leading end portion of the photopolymer plate, which is in a state of hanging down slightly, abuts a flat plate portion of the receiving guide. Thereafter, the receiving guide moves in accordance with movement of the leading end portion of the photopolymer plate. Further, the receiving guide moves forward in a conveying direction of the photopolymer plate immediately before conveying of the photopolymer plate is completed, and the photopolymer plate lands on the surface plate.

Abstract: A printing plate is held at one point thereof by a holding portion provided at a surface plate. When pushed by a pushing portion, the printing plate is only rotationally displaced. Thus, an angular error is substantially eliminated and displacement of the printing plate is small. Then, the pushing portion positions the printing plate in a direction perpendicular to a direction in which the surface plate can be moved. Then, movement of the surface plate positions the printing plate in the direction in which the surface plate can be moved.

Abstract: An automatic exposure apparatus for printing plates and a method for exposing printing plates, which can prevent a defective image such as an unfocused image from being formed when an image is recorded onto the printing plate is provided. Suction holes are formed at a surface plate 110 of an automatic exposure apparatus 100 for printing plates, and a vacuum pump 306 communicates with the suction holes. A solenoid valve 308 is provided at a communicating path 304 between the suction holes and the vacuum pump 306, and a chamber 310 is provided at the communicating path 304 between the solenoid valve 308 and the vacuum pump 306.

Abstract: A sheet material stacking device and an automatic exposure device for a printing plate, capable of stacking a number of interleaf sheets stably and efficiently. A pair of skewered rollers are provided at the sheet material stacking device used for the automatic exposure device. An interleaf sheet, which is fed from an interleaf sheet transport section, is guided by guide plates and nipped by the rollers. The interleaf sheet, while maintaining a so-called stronger pulling tension, is forcibly fed to an interleaf sheet accommodating section and stacked. Even if the interleaf sheet is thin, the interleaf sheet can behave stably as it is being stacked, and a number of the interleaf sheets can be stacked regularly and effectively.

Abstract: A device for removing an image recording material is provided, which takes up little space and is used with printing plates and interleaf sheets set alternately in a cassette. An interleaf sheet and a printing plate are taken out simultaneously. In the midst of being conveyed along a conveying path leading to an exposure section, only the interleaf sheet is sucked by a fan or drawn-in between a roller pair so as to be peeled off from the printing plate. The peeled-off interleaf sheet is discarded, and the printing plate is conveyed reliably to the exposure section.

Abstract: A casing of a ball bearing which holds a ball screw can be displaced on a supporting stand against urging force of a compression coil spring and a tensile coil spring. If vibration of the ball screw is transmitted to the casing, the casing attempts to move on the supporting stand. However, when, due to the vibration, the casing is displaced against the urging force of the compression coil spring and the tensile coil spring, the urging force forcibly attempts to return the casing to its original position. A frequency of vibration of the casing is thereby forcibly changed.

Abstract: In a printing plate automatic exposing device, a vacuum pump and a pressure sensor are provided in communication with a detection hole provided in a surface plate. When a photopolymer plate is set on the surface plate, a degree of vacuum of the detection hole becomes a predetermined degree of vacuum due to operation of the vacuum pump.

Abstract: A suction transport device capable of reducing manufacturing cost due to reduction of the number of suction mechanisms by which one of photopolymer plates accommodated in a magazine is taken out is attained. Also separability when the printing plate is taken out is improved, thus improving reliability of the suction transport device. Since, among suckers and suction fans, those located at positions corresponding to the widthwise direction ends of the printing plates are movable in the widthwise direction, and separating plates are movable in the same direction. When one of the printing plates of a different size is to be taken out, the leading end corner portions of the printing plate can always be curved at a fixed curvature, and separability is improved. Further, there is no need to increase the number of suckers thus decreasing cost.

Abstract: In an automatic exposure apparatus for printing plates, a photopolymer plate is taken out of an accommodating cassette in which stacked photopolymer plates are accommodated, and an image is recorded onto the photopolymer plate. A shutter which opens and closes an opening of the accommodating cassette is configured as a thin plate, and thus, the accommodating cassette is thin and light.

Abstract: A casing of a ball bearing which holds a ball screw can be displaced on a supporting stand against urging force of a compression coil spring and a tensile coil spring. If vibration of the ball screw is transmitted to the casing, the casing attempts to move on the supporting stand. However, when, due to the vibration, the casing is displaced against the urging force of the compression coil spring and the tensile coil spring, the urging force forcibly attempts to return the casing to its original position. A frequency of vibration of the casing is thereby forcibly changed.

Abstract: A diaphragm pressure sensor (1) includes a pressure guide member (3) made of fluoroplastics for the admission of liquid chemicals, pressure of which is measured. A pressure frame (4) made of perfluoroalkoxy resin is integrated with the pressure guide member (3) to form a wetted part 6 of the liquid chemicals. A ceramic diaphragm (8) with built-in pressure sensor (7) is bonded to the surface of the pressure frame (4) opposite to the surface to which pressure is applied. A body (2) is provided for housing the pressure guide member (3), pressure frame (4) and diaphragm (8).

Abstract: A printing plate discharging method and a printing plate discharging device can quickly and reliably discharge a printing plate from a surface plate, which printing plate has been placed in a state wherein one end portion of the printing plate projects from the surface plate, without making an exposed face of the printing plate dirty or scratched. At a discharging mechanism section of an automatic exposure device, a temporary support arm corresponds with the one end portion of the printing plate, which end portion projects from on the surface plate. The temporary support arm is raised higher than the surface plate by a moving stage moving and a roller thereby abutting against a projecting portion of the temporary support arm. Thus, the temporary support arm lifts up the one end portion of the printing plate. In this state, a plate discharging hook engages the one end portion of the printing plate (a lifted portion) and pushes the printing plate toward another end portion of the surface plate.

Abstract: A receiving guide is attached to an upper portion of a discharge mechanism section via a bracket. When a photopolymer plate is discharged from a photopolymer plate conveying section, a leading end portion of the photopolymer plate, which is in a state of hanging down slightly, abuts a flat plate portion of the receiving guide. Thereafter, the receiving guide moves in accordance with movement of the leading end portion of the photopolymer plate. Further, the receiving guide moves forward in a conveying direction of the photopolymer plate immediately before conveying of the photopolymer plate is completed, and the photopolymer plate lands on the surface plate.

Abstract: In a printing plate automatic exposing device, a vacuum pump and a pressure sensor are provided in communication with a detection hole provided in a surface plate. When a photopolymer plate is set on the surface plate, a degree of vacuum of the detection hole becomes a predetermined degree of vacuum due to operation of the vacuum pump.

Abstract: A pair of optical sensors are disposed above photopolymer plates and interleaf papers, which are alternately stacked with one another. These optical sensors basically have the same structure. However, the optical sensor is disposed so as to be inclined to an optical axis of reflected light, and therefore, a detection level of the optical sensor substantially becomes low. Accordingly, although the optical sensors each react to the reflected light from the photopolymer plate, the optical sensor does not react to the reflected light from the interleaf paper. As a result, it is determined whether the uppermost layer of the stack is the photopolymer plate or the interleaf paper. In a discriminating device of the present invention, general purpose optical sensors adapted to react to light having such a fixed intensity or greater, are used.

Abstract: In an automatic exposure apparatus for printing plates, a photopolymer plate is taken out of an accommodating cassette in which stacked photopolymer plates are accommodated, and an image is recorded onto the photopolymer plate. A shutter which opens and closes an opening of the accommodating cassette is configured as a thin plate, and thus, the accommodating cassette is thin and light.

Abstract: A feed apparatus for feeding a film has a pair of presser guide members for pressing a film F against an outer circumferential surface of a feed drum, a pair of upstream and downstream guide plates for guiding the film F, and a moving mechanism for moving a pair of nip rollers toward and away from the feed drum. When the film F is scanned by a light beam, the film F is tautly held against the outer circumferential surface of the feed drum. The moving mechanism has first and second displacing mechanisms actuatable in synchronism with vertical movement of the nip rollers toward and away from the feed drum for displacing the presser guide members and the upstream and downstream guide plates toward and away from the feed drum.

Abstract: Two plastic tubelike members on which an annular protrusion or an annular groove are respectively provided to be used as two constructive block members for assembling valve or joint devices are directly coupled to assemble such devices. Critical dimensional relationships on the coupling end having the annular groove are established wherein a deformation process can be controlled to engage the annular groove with the annular protrusion by a radially widening motion and an axially spring motion in elastic dynamics, while the coupling end having the annular groove is softened by heating to become elastic. High coupling accuracy can be secured with high coupling strength and durability.